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Genus Colonus

jumper 2000' - Colonus hesperus - male Spider - Colonus sylvanus - male Jumping spider - Colonus sylvanus - male Jumping spider - Colonus sylvanus - male Do I know you? Thiodina hespera, right? - Colonus hesperus Do I know you? Thiodina hespera, right? - Colonus hesperus Jumping Spider - Colonus sylvanus - female Salticid - Colonus sylvanus
Classification
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Chelicerata (Chelicerates)
Class Arachnida (Arachnids)
Order Araneae (Spiders)
Infraorder Araneomorphae (True Spiders)
No Taxon (Entelegynes )
Family Salticidae (Jumping Spiders)
Genus Colonus
Synonyms and other taxonomic changes
All three species previously Thiodina. See the World Spider Catalog.
Numbers
Three species in BugGuide's range (North America north of Mexico).
Identification
One helpful diagnostic character for this genus is the presence of two pairs of ventral bulbous setae on tibia I, seen on a preserved specimen here:



This character is apparently present on both adults and immature spiders.

Male C. puerperus and male C. sylvanus can be distinguished by the shape of the white blotch on the dorsal surface of the cephalothorax. It is more of a longitudinal line in C. puerperus and a circle/square in C. sylvanus.

Range
Colonus hesperus: southwestern United States, all the way to the west coast
Colonus puerperus: eastern half of the United States
Colonus sylvanus: eastern half of the United States
(all range info taken from(1))
Print References
Richman, D.B. and R.S. Vetter, 2004. A review of the spider genus Thiodina (Araneae, Salticidae) in the United States. The Journal of Arachnology 32(3):418-431 [download available here]
Works Cited
1.A review of the spider genus Thiodina (Araneae, Salticidae) in the United States
David B. Richman & Richard S. Vetter. 2004. The Journal of Arachnology 32: 418-431.